package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    public void saveFlavorDish(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null &&flavors.size()>0)
        {
            for (DishFlavor flavor : flavors) {
                flavor.setDishId(dishId);
            }
          dishFlavorMapper.insert(flavors);
        }
    }

    @Override
    public PageResult PageSelect(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> result =  dishMapper.PageSelect(dishPageQueryDTO);
        return new PageResult(result.getTotal(),result.getResult());
    }
    @Transactional
    @Override
    public void delete(List<Long> ids) {
        for (Long id : ids) {
            Dish dish =  dishMapper.getById(id);
            if(dish.getStatus().equals(StatusConstant.ENABLE)){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
       List<Long> setMealID =  setmealDishMapper.setMealDish(ids);
        if(setMealID != null && setMealID.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
        }
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//            dishFlavorMapper.deleteByDishId(id);
//        }
        dishMapper.deleteByIds(ids);
        dishFlavorMapper.deleteByDishIds(ids);
    }

    @Override
    public DishVO getById(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavor = dishFlavorMapper.getById(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavor);
        return dishVO;
    }

    @Override
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null &&flavors.size()>0)
        {
            for (DishFlavor flavor : flavors) {
                flavor.setDishId(dishDTO.getId());
            }
            dishFlavorMapper.insert(flavors);
        }
    }

    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder().categoryId(categoryId).status(StatusConstant.ENABLE).build();
        return dishMapper.list(dish);
    }
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getById(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Dish dish = Dish.builder().id(id).status(status).build();
             dishMapper.update(dish);
    }
}
